福建农业学报2024，Vol.39Issue(9)：1017-1022,6.DOI:10.19303/j.issn.1008-0384.2024.09.002
分子标记辅助选育优质甜糯玉米新自交系
Molecular Marker-assisted Breeding of Sweet'n Waxy Corn
摘要
Abstract
[Objective]Breeding a new corn variety that bore both sweet and waxy kernels on same ear by means of a molecular marker-assisted technique was developed to establish a unique branded produce for Fujian.[Method]Jingkenuo No.2000,a major high-quality waxy corn grown by the local farmers was cross bred in 3 generation to arrive at GMC013 through pedigree breeding.The new germplasm was then hybridized with sweet Xuetian No.7401 and self-pollinated.By employing the molecular marker-assisted and field selection methods like what has been used on rice,both sweet gene sh2 and waxy gene wx in the starch synthesis pathway were induced to the new corn variety for fresh consumption.[Result]The applied breeding technology successfully helped develop the sweet GM102 as well as the glutinous GM104 and GM112.The field tests proved that the inbred lines had met the quality standard and appearance of sweet and glutinous kernel types with desirable growth period,plant height,ear position on a plant,ear length,ear thickness,fresh weight of 100 kernels,and kernel setting rate.[Conclusion]The molecular-assisted technique combined with the field selection successfully bred a superior corn germplasm with the targeted characteristics in producing both sweet and waxy kernels on an ear.关键词
鲜食甜加糯玉米/分子标记辅助选择/sh2基因/wx基因Key words
sweet'n waxy corn/marker-assisted selection/sh2 gene/wx gene分类
农业科技引用本文复制引用
卢小转,周淑芬,李晨晨,陈子强,郭新睿,李刚,田大刚..分子标记辅助选育优质甜糯玉米新自交系[J].福建农业学报,2024,39(9):1017-1022,6.基金项目
福建省科技计划公益类专项(2021R1027001、2022R1027009) （2021R1027001、2022R1027009）
